Pith Number

pith:URDMRKNK

pith:2015:URDMRKNKVJLOWGUYTHZSUXTTXC

not attested not anchored not stored refs pending

Regularity of collections of sets and convergence of inexact alternating projections

Alexander Y. Kruger, Nguyen H. Thao

arxiv:1501.04191 v2 · 2015-01-17 · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{URDMRKNKVJLOWGUYTHZSUXTTXC}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:22:40.617760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a446c8a9aaaa56eb1a9899f32a5e73b88b896b9a96735b49425e8095ea377a6b

Aliases

arxiv: 1501.04191 · arxiv_version: 1501.04191v2 · doi: 10.48550/arxiv.1501.04191 · pith_short_12: URDMRKNKVJLO · pith_short_16: URDMRKNKVJLOWGUY · pith_short_8: URDMRKNK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/URDMRKNKVJLOWGUYTHZSUXTTXC \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a446c8a9aaaa56eb1a9899f32a5e73b88b896b9a96735b49425e8095ea377a6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab6c814b5986b43fa43099d6959c90480352fd71dc9d4ea8dd3c40c773cc5d12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-01-17T11:38:02Z",
    "title_canon_sha256": "b7e09a0387fb06d7991c3e27dc49aed78b765066c4c808f34ce99af3fa1811ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04191",
    "kind": "arxiv",
    "version": 2
  }
}